What type of pronouns refer to persons or things and change form in three different persons?

Personal pronouns are designed to refer to specific persons or things and are classified into three persons: first person (I, we), second person (you), and third person (he, she, it, they). Each of these pronouns can reflect different grammatical cases such as nominative (subject), objective (object), and possessive.

For example, the first-person singular "I" changes to "me" in the objective case and to "my" in the possessive case, demonstrating how personal pronouns vary in form based on their usage within a sentence. This flexibility allows personal pronouns to effectively convey the relationship between the speaker, the listener, and the subjects being discussed.

In contrast, relative pronouns (like who, which, that) serve to introduce relative clauses and do not change form according to person. Possessive pronouns (like mine, yours, his) indicate ownership but do not have a person distinction as personal pronouns do. Reflexive pronouns (like myself, yourself) refer back to the subject of the sentence but also lack the three-person form distinction inherent to personal pronouns.